Reproductive efficiency of female German Angora Rabbits under Indian sub-temperate climatic conditions.

Kumar, Davendra; Singh, Umesh; Bhatt, R. S.; Risam, K. S.

doi:10.4995/wrs.2005.524

Cited by 5 publications

(10 citation statements)

References 10 publications

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“…Prevalence of preweaning mortality due to insufficient milk supply and large litter size was the highest in winter (45.28%) while the lowest was in autumn (26.6%). Similar results were obtained by [31,32]. The prevalence of preweaning mortality because of cannibalism was 26.38%.…”

Section: Discussionsupporting

confidence: 85%

Investigation of Pre- and Post-Weaning Mortalities in Rabbits Bred in Egypt, with Reference to Parasitic and Bacterial Causes

El‐Ashram

Aboelhadid

Abdel-Kafy

et al. 2020

Animals

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This study was conducted to investigate the causes of mortality in young rabbits. A total of 110 V-Line breed female rabbits aged 5 m were used in this study. Rabbit kits were examined daily in pre- and postweaning stages to detect clinical disorders that caused death. The postmortem examination was carried out on dead kits. Furthermore, rabbits were examined for the probable bacteriological and parasitological causes of death. Fecal samples were collected from each dead kit and examined by standard microbiological procedures for bacterial pathogens and macroscopically and microscopically for the presence of endo- and ectoparasites. Throughout two breeding seasons, 2238 newborns were obtained, of which 1736 died, accounting for a 77.57% mortality rate. During preweaning (1st month of age) and postweaning (up to 3 months of age), 1501 (67.10%) and 235 (31.90%) deaths were recorded, respectively. A postweaning fecal examination revealed that 198 out of 229 (86.50%) were diarrheic rabbits due to Eimeria infection. Cittotaenia spp. eggs were detected in 4.37% of fecal samples, and mites (Sarcoptis scabiei) were present in 6.55%. E. coli was detected in 100% of examined animals during pre- and postweaning periods; however, Salmonella spp. were 97.22% and 43.67, respectively. Managemental risk factors were the main causes in preweaning mortality, including insufficient milk supply (37.37%), cannibalism (26.38%), mange infestation of a rabbit doe (22.20%), mastitis (4.30%), lack of doe care (5.00%), bronchopneumonia (2.13%), and enteritis (1.80%). However, risk factors in postweaning mortality included sudden death with general septicemia (13.80%), enteritis (9.63%), bronchopneumonia (5.43%), mange infestation (2.04%), and malnutrition (0.81%). In conclusion, the etiology of preweaning mortality in kits was related mainly to the doe, especially managemental risk factors. However, a combination of multiple pathogenic agents (parasites and bacteria) and managemental factors was reported in the postweaning stage. Careful attention must be paid to avoid these causes.

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Section: Discussionsupporting

confidence: 85%

Investigation of Pre- and Post-Weaning Mortalities in Rabbits Bred in Egypt, with Reference to Parasitic and Bacterial Causes

El‐Ashram

Aboelhadid

Abdel-Kafy

et al. 2020

Animals

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“…All the other parameters here examined were not influenced by the season. In agreement with our results, Khalil and Mansour (1987) and El-Maghawry et al (1988) also noted higher values for litter size at weaning in spring, while Kumar et al (2005) reported a significant effect of season on gestation length in Angora rabbits. Similarly to our data, the absence of seasonal effects on fertility (Rodríguez and Fallas, 1999), litter size at birth and weaning (Bhatt et al, 2002) and sex ratio (Khalil and Mansour, 1987) has also been reported.…”

Section: Resultssupporting

confidence: 82%

“…In addition, Belhadi et al (2002) also supports our findings that spring is the favourable season for rabbit reproduction. In the present study, summer was not found such an unfavourable season for reproduction as reported in temperate (García et al 2000), sub-temperate (Kumar et al, 2005) and tropical (Ponce de León et al 2000) climates.…”

Section: Resultssupporting

confidence: 62%

Reproductive performance of different breeds of broiler rabbits under sub-temperate climatic conditions

et al. 2013

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This study was conducted to assess the effect of breed, season, age and weight of doe at mating on reproductive performance of 4 broiler rabbit breeds, Grey Giant, White Giant, Soviet Chinchilla, and New Zealand White, reared under standard management practices in sub-temperate climatic conditions of India. They were first mated at 6 to 7 mo of age, whereupon an extensive breeding system (re-mating after weaning) was followed. Weaning was done 42 d after kindling. The data from the records on reproduction consisting of 503 matings and 377 kindlings were analysed. The parameters considered were fertility rate, litter size at birth (LSB), litter weight at birth (LWB), litter size at weaning (LSW), litter weight at weaning (LWW), doe weight at mating (DWM), gestation length and sex ratio. Among 4 breeds, the LSB, LWB and LSW were higher in Grey Giant followed by White Giant, Soviet Chinchilla and New Zealand White. The LSB and LSW in Grey Giant breed differed significantly (P<0.05) from Soviet Chinchilla and New Zealand White. Season had significant (P<0.05) effect on LSW with higher values during spring (5.68±0.24), followed by summer (5.29±0.30), winter (5.13±0.25) and autumn (4.17±0.49). The body weight of doe at service significantly influenced fertility. The fertility increased as body weight increased. The age of the doe at mating had a significant effect on LSW, with higher values for does more than 2 yr and less than 1 yr old compared to 1-to 2-yr old does. The parity did not affect any of the parameters studied. It is concluded that the factors studied affect the reproductive performance of rabbit does. Grey Giant breed showed the highest litter size at birth and weaning, and the highest litter size and weight at weaning was in spring.

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“…Bhatt et al (2002) found that litter size and weight at birth, litter size at weaning as well as litter weight at weaning were all higher during winter as compared to those during summer and the rainy season. Similar results were reported by Kumar et al (2005) in Angora rabbits.…”

supporting

confidence: 91%

The effect of season and parity order on fertility of rabbit does and kit growth

Tuma¹,

Tůmová²,

Valášek³

2010

CZECH J ANIM SCI

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The effect of season and parity order on doe fertility and rabbit growth was evaluated. Two hundred and fifty Hyplus® does were divided into five groups according to kindling, each in a given season of the year (September, December, February, April and June). Another five groups were separated by parity order (from the first to the fifth kindling). After weaning, each group of rabbits was fed until 77 days of age. The season of the year significantly affected service number of pregnancy, litter size, litter weight at birth, litter weight at 21 days, litter size at weaning as well as live weight at 77 days. Parity order affected service number of pregnancy and litter weight at 21 days in a more limited way. Significant interactions of season and parity order were determined in service number of pregnancy, with the highest values occurring in December (2.2, P ≤ 0.010) and February (1.9, P ≤ 0.010) at the second kindling. Litter size was the largest in December and at the fifth kindling. Significant interactions (P ≤ 0.015) were also found in litter weight at 21 days, whereby litter weight had increased by the third kindling. However, the highest litter weight was reported after the fourth kindling in December.

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Reproductive efficiency of female German Angora Rabbits under Indian sub-temperate climatic conditions.

Cited by 5 publications

References 10 publications

Investigation of Pre- and Post-Weaning Mortalities in Rabbits Bred in Egypt, with Reference to Parasitic and Bacterial Causes

Investigation of Pre- and Post-Weaning Mortalities in Rabbits Bred in Egypt, with Reference to Parasitic and Bacterial Causes

Reproductive performance of different breeds of broiler rabbits under sub-temperate climatic conditions

The effect of season and parity order on fertility of rabbit does and kit growth

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